This is a cool idea but unless it provides a seamless UX it will probably have minimal utility but I guess you could appear enigmatic to your friends and likely shunned by the algorithm. I think a solution that doesn't rely on Facebook would be preferable and I prefer solutions that don't further the monopoly of Chrome by working exclusive to that ecosystem even though I know Firefox is used by less than 10% of people at this point.
or better yet, just delete your facebook altogether. i did, & i feel great